Timezone is big, in our books. 60 x100. My home club track in Seattle, is big too; 48x100. 103 r/o sounds right. The pinion never came off the motor. TZ gets a little tacky from sauce. Grip was medium high with tacky. This last IIC was the highest I've raced on in a long time. When I was out doing photo shoots, I was standing in the groove on back straight. My shoes were sticking to the floor!